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. Author manuscript; available in PMC: 2021 May 24.
Published in final edited form as: Physiol Behav. 2007 May 31;92(4):725–733. doi: 10.1016/j.physbeh.2007.05.064

Table 3.

State of eye in dolphin mothers and their calves as function of their relative positions and the age of calves.

Dolphin pair / Age in weeks Calves Mothers
Eye directed to the mother Eye directed to the opposite side Eye directed to the calf Eye directed to the opposite side
Right Left Right Left Right Left Right Left
Pair 1
3–4 w 95% (137) 97% (219) 88% (206) 93% (235) 98% (221) 96% (165) 94% (164) 90% (222)
7–10 w 91% (227) 97% (256) 68% (227) 81% (311) 97% (323) 95% (312) 96% (329) 92% (321)
Mean (n=2) 93±2 97±0 78±10 87±6 98±1 96±1 95±1 91±1
Pair 2
1w 100% (412) 99% (753) 90% (605) 60% (321) 98% (548) 99% (371) 96% (348) 100% (883)
2w 100% (450) 100% (490) 79% (424) 55% (429) 100% (321) 100% (477) 95% (307) 100% (610)
4w 99% (399) 99% (265) 42% (404) 35% (253) 100% (148) 100% (179) 99% (163) 95% (65)
Mean (n=3) 100±0 99±0 70±15 50±8 99±1 100±0 97±1 98±2
Mean for both eyes
Pair 1 (n=4) 95.0±1.4 82.5±5.4 96.5±0.6 93.0±1.3
Pair 2 (n=6) 99.5±0.2 60.2±9.5 99.5±0.4 97.5±1.1

The data are presented as percentage of the cases in which the eye was seen open. The total number of observations is given in parenthesis. The average values are mean ± standard error (SE).